No. Airsoft is not strictly for "MilSim". You can "shoot you friends in the face" with airsoft guns too.
If you "shoot your friends in the face" with an airsoft gun you can cause serious damage.
If you have a powerful enough airsoft at short range you can actually kill someone with it.
They do when you get hit in the eye.
And airsofts cause permanent ocular damage if hit in the eye